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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichGrisoni Engineering
Grisoni Engineering Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Grisoni Engineering provides planning, consulting and project support in building services engineering, including heating, ventilation, air conditioning, sanitary and refrigeration systems as well as sewerage and utility lines. Additional services include BIM, quality management, specialist site supervision, overall planning and operational optimisation.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered12
Client advisory
Support for the client in planning and implementation of construction projects; clarification of costs, schedules, objectives and quality assurance, as well as ongoing monitoring of project progress, costs and quality.
Heating engineering
Planning and implementation of heating engineering for new builds, conversions and renovations; with a focus on renewable energies, sustainable systems and energy-saving heat distribution.
Ventilation & air-conditioning engineering
Planning of ventilation systems for new builds and renovation of older buildings; from decentralised systems to central ventilation units for residential and working spaces.
Plumbing & sanitary engineering
Planning, installation and maintenance of sanitary systems in buildings; water supply, wastewater disposal and sanitary facilities, as well as integration into the architectural design of spaces.
Sewerage & utility lines
Planning and installation of sewerage systems and utility lines for wastewater; preparation of sewerage plans according to Swiss standards and advice on local requirements.
Refrigeration engineering
Development of plant concepts for refrigeration applications; energy-efficient, safe solutions for cost-effective and reliable cold supply.
Operational optimisation
Analysis of energy consumption, costs and losses; development of recommendations and measures to increase energy efficiency, as well as support with investments and funding.
Specialist construction supervision
Coordination and monitoring of the construction process; ensuring that construction projects are implemented on schedule according to plans, budget and quality standards.
BIM
Use of Building Information Modeling for planning, execution and management of construction projects; analysis and coordination of building services in a 3D environment, including HLKSE layout.
Overall planning
Overall planning of HLKSE and building automation with long-standing partners; services from a single source for a direct route and an efficient construction process.
Quality management (QM)
Review and documentation of processes and results; monitoring of relevant data, early identification of deviations and ensuring compliance with quality requirements.
Spatial & technical coordination
Planning and coordination of the spatial arrangement of building components and technical systems; avoiding collisions and conflicts between specialist disciplines.
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3.9/5

Grisoni Engineering

Trust & reputation

ranQ Trust Score of Grisoni Engineering: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Grisoni Engineering scores 60.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Grisoni Engineering scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Grisoni Engineering scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Grisoni Engineering scores 5.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.5.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grisoni Engineering reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Segantinistrasse 114
8049 Zurich
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-112.129.954
Founded
2004 · 22 years
Last commercial register change
August 10, 2011
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
67.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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